SU1323250A1 - Arrangement for jig drilling of holes - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used when drilling holes on a multi-purpose CNC machine tool of a boring group. The goal is to improve the accuracy of machining holes on multi-purpose CNC machines by preventing tool removal. For this purpose, on the automatically retracted bracket 1, a leading 4 and a driven 5 sprockets are installed, on which recesses are made. The conductor sleeves are installed in hollow axles of the bush-roller chain and on the same axles are mounted with the possibility of self-installation of housings with protrusions 15, which interact with the recesses of the driving 4 and driven 5 stars. In this case, the asterisk is equipped with an electric winding for fixing the stub-roller chain in the desired position. 1 h, para. f-ly, 3 ill. CO co IND to eat about

Description

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The invention relates to a mapping and can be used when drilling holes on a multi-purpose CNC machine tool of the drilling and drilling group.

The aim of the invention is to increase the accuracy of machining of holes on multi-purpose CNC machines by preventing the removal of the tool.

FIG. 1, a device in a lineup with a multi-purpose machine, frontal view, FIG. 2, a common device of FIG. 3 — same longitudinal section. - cylinder 3, and it is the base on which the lead 4 and the sprocket 5 sprocket with the strap roller chain 6 is fixed (fig. 2). The sprocket is mounted on the shaft 7 and is connected by a chain gear 8 with a rotary indexing gear the mechanism 9 and the electric drive 10. Vedom an asterisk 5 through the elastic elastic sleeve 11 is mounted on the axis 12 and an electric winding 13 is placed in its annular groove. Under the lower end of the sprocket 5 axially, there is another eJ7electric winding 1 located under the lower end of the arm. x 17 of the roller chain 6. Inside the hollow axes 17, interchangeable conductor sleeves 18 are installed under the drill bit 19. The bracket 2 is mounted in the vertical groove of the plate 20 fixed to the side wall of the machine.

The device works as follows.

Before drilling the hole in the part, according to the machining program, simultaneously with the installation of the tool, the bracket 1 is turned by means of the pneumatic cylinder 3 into the working position. Next, the rotation-indexing mechanism 9 rotates the roller-roller chain 6, which with the help of the housings 16 sets the sleeves 18 concentric

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but the machine spindle axis. Further, according to the program, electric current is supplied to the winding .13 and the housing 16 with the axis 17 is fixed with a prismatic protrusion relative to the sprocket 5. Then the axial flow is reported to the drill 19 and the sprocket 5 is finally centered on drill. At this moment, an electric current is applied to the winding 14 and the sprocket 5 is rigidly fixed relative to the bracket 1.

After finishing the processing, the drill bit 19 is withdrawn from the sleeve 18, the windings 13 and 14 are simultaneously disconnected. Next, the tool and the sleeve are replaced for further processing of the hole, and the cycle continues. After the holes have been machined to perform other operations, for example, milling, the bracket 1 is retracted from the machining zone to the initial position according to the program and the workpiece continues.

Claims (2)

1. Arrangement of the coordinate drilling of the holes, which contains a retracted bracket with a conductor sleeve, an actuator and a mechanism for fixing the conductor sleeve, which is the case. In order to improve the machining accuracy of the holes on multi-purpose CNC machines, the device is equipped with driven and driving sprockets mounted on a bracket and a roller-roller chain for placement in its hollow axle conductor sleeves and These same axes with the possibility of self-installation are housings introduced into the device with prismatic protrusions designed to interact with the driven and driving sprockets. 2. Device by. Claim, 1, characterized in that it is provided with a mechanism for fixing a bush-roller chain, made in the form of an electromagnet mounted on a driven sprocket. cpual 9 in  I / 4 75 77 Editor N. Gorvat Compiled by M. Chernykh Tekhred L. Oliynyk Order 2905/13 Circulation 975 Subscription VNISHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 (uff.3 Proofreader A.Ilyin